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Showing posts from December, 2023

sequential (103) no realistic serial circuit (parallel in out line)

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  https://wodewangzhishime.blogspot.com/2023/12/blog-post_43.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post_43.html  . . . John: This article ( https://wodewangzhishime.blogspot.com/2024/02/httpswodewangzhishime.html ) say that parallel in out line is a branch of the Clock line of RJ 45. Me: OK. John: Look at the picture above. Do you see a frequency mixer? This mixer mix the frequency of the output of the modulator and the clock line of RJ45. Me: OK. John: Originally, the modulator output 3-2-1-4, and then, input them to a - b - c - d. Because, the parallel in out line is the branch of the clock line of RJ45. If the clock line of RJ 45 is hacked by hackers. Hackers can change 3-2-1-4 into 0-4-0-4. Consequently, the input to a - b - c - d is 0 , 4, 0, 4. . Me: Take a look at this article . ( https://kamchihau.blogspot.com/2024/07/sequential-109.html ) .

sequential (102) no realistic serial circuit (left shift)

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https://wodewangzhishime.blogspot.com/2023/12/blog-post_13.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post_13.html  . . . . John: This article ( https://wodewangzhishime.blogspot.com/2023/12/sequential-99.html ) say that Left shift is a way of hacking. Me: To some extent "Yes". John: OK. In reality, we don't need "Left-Shift" to change the contents of (subject-interrupt-object). Me: Then, what do we need? John: We need to hack the clock line of RJ45. Read this article. (  https://wodewangzhishime.blogspot.com/2023/12/blog-post_14.html ). This article say "parallel in out line" is the branch of the clock line of RJ45. Me: OK. John: Look at the picture above. Originally, the output of the field of subject-interrupt-object is 0-1-0. . Because, the parallel out line is a branch of the clock line of RJ45, hacker hack the clock line of RJ45 and then hacker can control the parallel out line. Hacker let the output of subject-interrupt-obj...

sequential (101) delay circuit e

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  https://wodewangzhishime.blogspot.com/2023/12/blog-post_12.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post_12.html . . . Me: The upper picture use the inverters to delay the circuit. . However, the lower picture use the JK-Flip Flop to delay the circuit.

Sequential (100) delay circuit d

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https://wodewangzhishime.blogspot.com/2023/12/sequential-99.html . . Ref:  https://wodewangzhishime.blogspot.com/2023/12/sequential-99.html . . .   . . Me: This article ( https://wodewangzhishime.blogspot.com/2023/12/blog-post_11.html ) mention that if I input 3-2-1-4, it stack overflow. Becuase 3-2 are too close to each other. .  . John: It is the problem of frequency. Me: Yes, . . Look at the 1st picture of this article. . It is an RJ45 circuit. .  This circuit use a capacitor and an inductor to form a filter. John: What's the filter for?? Me: For filtering signal. . . It let the signal within the boundary of frequency pass through. John: That mean, it let 3-2 enter the ground. Me: Yes,

sequential (99) mov object value

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https://wodewangzhishime.blogspot.com/2023/12/blog-post_11.html . . Ref: https://wodewangzhishime.blogspot.com/2023/12/blog-post_11.html   . . . . . Me: The following 4 articles mention how fields work in RAM. . They are very important. . Why ?? I answer you later. . Maybe,you can read them first. 1)  https://wodewangzhishime.blogspot.com/2021/11/httpswodewangzhishime_96.html 2)  https://kamchihau.blogspot.com/2022/10/httpskamchihau_17.html?m=1 3)  https://wodewangzhishime.blogspot.com/2022/06/satellite-for-loop.html 4)  https://kamchihau.blogspot.com/2022/11/httpskamchihau.html . Me: We deep inside the theme of today. . There're 6 fields inside a register. . They're the fields of Subject, Role, interrupt status, value's type, object and Value.  The field of Value is at the last position. Why??  Because, the field of Value is left shift forbiden. John: The fields of Subject,Role,interrupt,value's type and object are left/right shift bilateral.  On...

sequential (98) delay circuit c

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https://wodewangzhishime.blogspot.com/2023/12/sequential-94-cross.html . Ref:  https://wodewangzhishime.blogspot.com/2023/08/is-that-due-to-wish-to-teach-americas.html . . . Me: https://wodewangzhishime.blogspot.com/2023/12/sequential-94-cross.html  . .This article mention that if you put too many inverters, the circuit delay too much. . Consequently, stack overflow occur. . Today, we give one more example in which the cirucit doesn't put too many inverters, however, stack overflow sitll occur. . I'm gonna input 3-2-1-4.   3-2 comply with the combination of NPN-PNP. . Look at the above picture. . There're 2 inverters only. . However, 3-2 both comply with the combination of NPN-PNP. . Consequently, stack overflow occur. . John: Because, 3-2 are closed to each other. . The frequency is too high. Me: In this case, stack overflow occur. . .

sequential (94) delay circuit b

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  https://wodewangzhishime.blogspot.com/2023/12/blog-post_2.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post_2.html  .  . . Me: You may consult it . . https://wodewangzhishime.blogspot.com/2023/12/blog-post_2.html .  Inverter is to delay the flow of current.  Normally, we put a pair of inverter. . In a single Up cylce, I input 3-2-1-4, indeed, only "3" can be input. . Why ?? Because, only "3" comply with the combination of NPN-PNP. . If you put too many inverters, the consequency is that not only "3" comply with the combination of NPN-PNP, but, "2" also comply with the combination of NPN-PNP. . Consequently, stack overflow occur.

sequential (93) delay circuit

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https://wodewangzhishime.blogspot.com/2023/12/sequential-92-smoothing-capacitor.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/sequential-92-smoothing-capacitor.html   . . . . . 1) About stack overflow, 2) Look at the 1st and 2nd pictures. . Note: The inverter delay the fow of current. The speed of the flow of current of line one is slower than the speed of the flow of current of line two. . 3) When the combination is npn-pnp, the up cycle is at the falling edge.  . 4) Look at the 3rd picture.  . John: When you input 3-2-1-4 to the gate of R1 during one up cycle, indeed, only 3 has the combination of NPN and PNP. .   And then , 2-1-4 are discarded. 3. npn pnp 2.  npn npn (discarded) 1.  npn npn (discarded) 4.  pnp npn (discarded) . John: Look at the last picture. . It is a RJ45 circuit. . .During an Up cycle, there're 3-2-1-4. . Me: Indeed, Port A only input with 3. . .And then, 2-1-4 are discarded. . Why ?? . John: Because, only ...

sequential (92) - flip flop (3) - unstable

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  https://wodewangzhishime.blogspot.com/2023/12/blog-post.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/blog-post.html   . . John: Before we start, you may read this article first. <  https://kamchihau.blogspot.com/2024/07/sequential-109.html >. Me: OK. . John: This article  < https://wodewangzhishime.blogspot.com/2023/12/blog-post.html >  mention about a stable flip flop. You may read it first.   Me: OK. . John: Now, we start this article. Me: OK. John: At the above picture. There is an Up cycle on the clock line. This up cycle cover R0(0), R0(1), R0(2), R0(3). However, . R0(0)-> stable. R0(1)-> Unstable. R0(2)-> stable. R0(3)-> stable. . John: When R0(1) is unstable, R0(1) become a gap. Me: Then, what does gap mean? John: You may read this article. < https://wodewangzhishime.blogspot.com/2022/04/httpswodewangzhishime_23.html >. It is the meaning of "Gap".

sequential (91) - Flip flops (1) stable

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  https://wodewangzhishime.blogspot.com/2023/12/sequential-90-enabling-line.html . Ref:  https://wodewangzhishime.blogspot.com/2023/12/sequential-90-enabling-line.html . . . John: The above picture is a circuit of flip flop. I guess you know that . . When set and reset is 1-0 -> 1 0-1 -> 0 0-0 -> remain the same.  1-1 -> toggle or illegal.  . John: Do you see an Up cycle on the clock line? Me: Yes,. John: This Up cycle is stable.

sequential (90) stack overflow (90)

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  https://wodewangzhishime.blogspot.com/2023/11/httpswodewangzhishime_29.html . Ref: https://wodewangzhishime.blogspot.com/2023/11/httpswodewangzhishime_29.html . . . . John: Before we start, you may take a look at this article ( https://kamchihau.blogspot.com/2022/12/tom-actually-how-many-people-in-hackers.html ).  . Me: OK. . John: The register of if-else is being hacked. As a result,  the function of (MOV register_receiver, the value) can't work. . Me: That's true. The function can't work. . John: Take a look at this articles (  https://wodewangzhishime.blogspot.com/2023/12/sequential-99.html ). Subject-interrupt-Object are the configuration of the register of Port A. . Me: OK. . John: We assume that the configuration is at the left hand side of the field of value. . Me: OK. . John: What will happen if the configuration is at the right hand side of the field of value? . Me: Take a look at the picture above. If the configuration is at the right hand side of the f...